Calibration—7623/R7623
Service
POWER
SUPPLY
Equipment
Required
2. DC voltmeter
(VOM)
1.
Precision
DC voltmeter
3.
Three-inch screwdriver
Control
Settings
Set the
controls as
given in the Preliminary Control
Settings.
1.
Adjust
—
50
Volt
Power
Supply
a.
Set
the INTENSITY control fully counterclockwise.
Fig.
2-1.
(A) Location
of low-voltage and high-voltage test points
(right
side of instrument) (B) Location of —50 V adjustment
(Low
Voltage Regulator board).
b.
Connect
the precision DC voltmeter between TP -50
(see
Fig. 2-1 A) and chassis ground.
c. CHECK-Meter reading;
-50 volts ±0.1
volt.
d. ADJUST-
—50 volts adjustment R881 (see
Fig. 2-1B) for a meter reading of exactly
-50 volts.
e.
INTERACTION
—Change
in
setting
of R881 may
affect
the operation
of all
circuits within the 7623.
2.
Check
Remaining
Power-Supply
Voltages
a.
CHECK—Table
2-1 lists the
low-voltage
power
supplies
in this instrument. Check each supply
with the
precision DC
voltmeter for
output voltage within the given
tolerance
(connect meter ground
lead
to chassis ground).
Power
supply test points are
shown
in
Fig. 2-1 A.
NOTE
Ripple
and regulation of the individual power
supplies
can be checked using the procedure given
under Troubleshooting Techniques in Section 4.
TABLE
2-1
Power
Supply
Tolerance
Power Supply
Test
Point
Output
Voltage
Tolerance
-50 Volt
Pin 8 P1170
±0.1
Volt
-15 Volt
Pin
7
P1170
±0.1
Volt
+5 Volt
Pin 5 P1170
±0.07
Volt
+15 Volt
Pin
4 P1170
±0.1 Volt
+50 Volt
Pin
3 P1170
±0.3
Volt
+130 Volt
Pin 2 P1170
±5.2 Volt
2-7
Summary of Contents for 7623
Page 1: ...MANUAL 7623 R7623 STORAGE OSCILLOSCOPE SERVICE MANUFACTURERS OF CATHODE RAY OSCILLOSCOPES ...
Page 51: ...Fig 3 2 Block diagram of Logic circuit Circuit Description 7623 R 7623 Service ...
Page 72: ...W NJ 00 Fifl 3 22 Low Voltage Power Supply detailed block diagram ...
Page 73: ...Circuit Description 7623 R 7623 Service ...
Page 74: ...CO NJ CD Fig 3 22 Low Voltage Power Supply detailed block diagram cont ...
Page 75: ...Circuit Description 7623 R 7623 Service ...
Page 97: ...Circuit Description 7623 R7623 Service 3 51 ...
Page 98: ...Circuit Description 7623 R7623 Service Fig 3 39 Output Pulses for the Storage Circuits 3 52 ...
Page 103: ...Circuit Description 7623 R7623 Service 3 57 ...
Page 108: ... Ç À Fig 4 2 Location of circuit boards in the 7623 ...
Page 109: ...Fig 4 3 Location of circuit boards in the R7623 Maintenance 7623 R 7623 Service ...
Page 113: ...Maintenance 7623 R7623 Service Fig 4 6 Circuit Isolation Troubleshooting Chart 4 9 ...
Page 165: ...7623 BLOCK DIAGRAM ...
Page 166: ...7623 R7623 Service Front of Board ...
Page 167: ......
Page 168: ...FL ...
Page 169: ......
Page 173: ...7623 Logic ...
Page 175: ...Vertical Interface A4 ...
Page 178: ...Vertical Interface ...
Page 180: ...Vertical Amp A5 ...
Page 184: ...Horizontal Amp A6 ...
Page 186: ...7623 TO P450 VERT AMP 3 HORIZONTAL AMPLIFIER ...
Page 188: ...Output Signals A7 ...
Page 190: ...FROM 7G23 Output Signals g ...
Page 195: ...FROM LV POWER SUPPLY 7623 CRT CIRCUIT ...
Page 197: ......
Page 200: ......
Page 202: ...Storage Output A14 ...
Page 204: ......
Page 205: ...7623 R7623 Service Fig 6 14 A15 Cal Storage circuit board ...
Page 208: ......
Page 209: ...7623 R7623 Service Fig 6 15 A16 Readout System circuit board ...
Page 213: ......
Page 242: ...7623 R7623 OSCILLOSCOPE b ...
Page 243: ...151 ...
Page 246: ...20 ...
Page 247: ...7623 R7623 OSCILLOSCOPE 112 ...